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lither
Joined: 04 Dec 2005
Posts: 1362
Location: Taiwan
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 Posted: Tue Dec 09, 2008 2:43 am Post subject: is there any white ceramic 27256 ? |
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hi
i just wonder if there is any white ceramic 27256 existed?
i guess the only chance is the USSR clone
could it be USSR K573RF9 or K573RF8?
does anyone has them in collection?
thx !
Lee |
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CPUShack
Joined: 16 Jun 2003
Posts: 34259
Location: State of Jefferson, USA
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iguana
Joined: 24 Apr 2007
Posts: 2456
Location: Ottawa, Canada
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| Posted: Tue Dec 09, 2008 4:53 am Post subject: |
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РФ8 РФ9 are rather uncommon.
К573РФ8 white cer.
КM573РФ8 white cer.
573РФ8 white cer. mil. spec
КР573РФ8 black plastic
КC573РФ8 brown cer
_________________
My Want List: http://www.cpu-world.com/forum/viewtopic.php?t=22729
Soviet chips info and my own collection: www.cpu-ukraine.com
Last edited by iguana on Tue Dec 09, 2008 5:11 am; edited 3 times in total |
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iguana
Joined: 24 Apr 2007
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Location: Ottawa, Canada
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Tue Dec 09, 2008 5:47 am Post subject: |
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| And the 573RF3 is mistakenly shown as clone of 2732. In reality it's 4k x 16 proprietary designed EPROM for PDP-11 bus. |
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lither
Joined: 04 Dec 2005
Posts: 1362
Location: Taiwan
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| Posted: Tue Dec 09, 2008 7:00 am Post subject: |
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thank you for the reply
i have another question
what is the soviet equivalence of 4164 and 41256?
i am looking for some to restoring my XT
thx!
Lee |
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iguana
Joined: 24 Apr 2007
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Tue Dec 09, 2008 8:06 am Post subject: |
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| The main difference between К565РУ7 and К565РУ8 is that К565РУ7 requires 9-bit refresh address. |
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kpt_future
Joined: 11 Jan 2009
Posts: 2048
Location: CZ
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| Posted: Sun Feb 01, 2009 6:18 pm Post subject: |
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Please, what about K565RU3
thanks |
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Elar
Joined: 16 Jul 2003
Posts: 746
Location: Tallinn, Estonia
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| Posted: Mon Feb 02, 2009 1:33 am Post subject: |
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| kpt_future wrote: | Please, what about K565RU3
thanks |
16Kbit DRAM - Mostek 4116 |
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kpt_future
Joined: 11 Jan 2009
Posts: 2048
Location: CZ
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| Posted: Mon Feb 02, 2009 5:03 pm Post subject: |
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thanks
Can you share some complete table (as above) for identifying russian memories? |
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Elar
Joined: 16 Jul 2003
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Location: Tallinn, Estonia
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